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Finding the Fourth Proportional to 858.44, 1,185 and 544.16

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Solution

The fourth proportional to 858.44, 1,185 and 544.16 is: 751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.44 : 1,185 = 544.16 : x
  2. Step 2: Convert to fraction form
    858.44/1,185 = 544.16/x
  3. Step 3: Cross multiply
    858.44x = 1,185 × 544.16
  4. Step 4: Simplify right side
    858.44x = 644,829.60
  5. Step 5: Solve for x
    x = 644,829.60/858.44
  6. Step 6: Final answer
    x = 751.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.